US7416085B2 - Sieving device having beating elements - Google Patents
Sieving device having beating elements Download PDFInfo
- Publication number
- US7416085B2 US7416085B2 US10/525,280 US52528005A US7416085B2 US 7416085 B2 US7416085 B2 US 7416085B2 US 52528005 A US52528005 A US 52528005A US 7416085 B2 US7416085 B2 US 7416085B2
- Authority
- US
- United States
- Prior art keywords
- screen
- sieve
- sieving
- beaters
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
- 238000007873 sieving Methods 0.000 title abstract 9
- 238000010009 beating Methods 0.000 title abstract 3
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/54—Cleaning with beating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
Definitions
- the inventions relates to a sieve with a screen having openings and beaters that are underneath the screen and that can strike the lower face of the screen in order to free the screen from material plugging the screen openings.
- German utility model 84 35 585 describes a sieve with bar-shaped beaters that are secured to an elastic mat that is mounted underneath the flexible screen. Both screens are mounted on tensioning rods that reciprocate and thus insure that the lower screen is taut and strikes with its beaters against the lower face of the upper screen in order to knock big particles out of the upper screen.
- the provision of a second screen underneath the first one is expensive and entails considerable extra manufacturing time.
- beaters are mounted on an elongated longitudinally tensioned actuating element, such as a cable or belt, that extends underneath the screen.
- the mounting of the beaters on elongated actuating elements is particularly simple from the manufacturing point of view and leads to particularly good results when cleaning.
- the beaters are spherical. It is also suggested that the actuating element extend transversely, longitudinally, or diagonally of a movement direction of the material being sieved.
- each removable screen assembly has its own system for clearing the screen openings of large and sticky particles.
- ends of the actuating elements are solidly releasably connected or latched to the frame of the screen.
- An alternative suggestion is to provide beaters underneath a screen spanned over a full working width of a sieve, ends of the actuating elements carrying two or more beaters being fixed to side walls of the sieve.
- the ends of the actuating element are solidly releasably connected or latched to side walls of the sieve. It is also advantageous when transverse beams are mounted between the beaters in a lower region of the sieve and support the actuating elements.
- the transverse beams extend transversely or longitudinally of a movement direction of the material being sieved.
- the actuating element extends through the beaters. This also aids in changing the beaters on the actuating elements.
- a lower face of the screen is provided with projecting flat iron bars that are embedded in the plastic of the screen and that serve as attachment points for the actuating elements.
- FIG. 1 is a vertical section through a single framed sieve assembly with one beater on an actuating element
- FIG. 2 is the sieve assembly according to FIG. 1 with two beaters on the actuating element;
- FIG. 3 is the sieve assembly according to FIG. 1 or 2 with two actuating elements with one and two beaters;
- FIG. 4 is a vertical section through a sieve with a screen extending over the entire width of the sieve and underneath beaters.
- a sieve assembly 1 is shown having a generally horizontal rectangular screen 2 in turn held in a frame having four edges with respective frame elements 3 that project downwardly past the screen 2 .
- the screen 2 and frame elements 3 are made of plastic and secured to each other, in particular by gluing, casting, or welding, or the screen 2 and frame elements 3 are unitarily formed of plastic.
- the plastic is preferably polyurethane.
- the frame elements 3 have on their lower faces a downwardly open groove or opening 4 in which ends 6 of an elongated actuating element 5 are fixed. To accomplish this the ends 6 of the elements 5 are enlarged to have the same size and shape as the openings 4 so that they fit and are held complementarily in the openings 4 .
- the openings 4 in the frame elements 3 can also be made with an inwardly extending projection that the end 6 is looped around so as to lock it in place.
- the actuating element 5 is provided with beaters 7 that are preferably made of plastic and that can have different shapes.
- the beaters 7 are spherical balls.
- the actuating element with its beaters can extend transversely, longitudinally, or diagonally to the movement direction of the material being sieved.
- FIG. 4 The embodiment shown in FIG. 4 is a sieve with a screen 8 extending over the entire working width of the sieve and having edges provided with mounting clips 9 that are hooked on mounting rails 10 that are fixed to side walls 11 of the sieve. In this manner the screen 8 is solidly held in the sieve.
- the screen 8 Underneath the screen 8 is an actuating element 5 whose ends are releasably mounted on the side walls 11 , in particular on mounts 3 of the side walls 11 . To this end the mount 13 can have a bore.
- FIG. 4 shows these elements when raised.
- the beams 12 can extend transversely or longitudinally to the movement direction of the material being sieved, depending how the screen 8 is installed. With a longitudinally tensioned screen 8 the beams extend transverse to the movement direction.
- flat iron bars are set on the lower face of the screen in the plastic of the screen so as to project downward and serve as mounting points for the actuating element or elements.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention relates to a sieving device provided with a sieving mat (2), which has sieving openings, and with beating elements (7), which are located underneath the sieving mat and which strike against the underside of the sieving mat (2) in order to free the sieving mat (2) from material to be sieved that is clogging the sieving openings. Said beating elements (7) are fastened to at least one elongated tensioned traction mechanism (5) such as a cable or band that extends underneath the sieving mat (2).
Description
This application is the US national phase of PCT application PCT/EP2003/006780, filed 26 Jun. 2003, published 11 Mar. 2004 as WO 2004/020113, and claiming the priority of German patent application 10239667.1 itself filed 26 Aug. 2002, whose entire disclosures are herewith incorporated by reference.
The inventions relates to a sieve with a screen having openings and beaters that are underneath the screen and that can strike the lower face of the screen in order to free the screen from material plugging the screen openings.
German utility model 84 35 585 describes a sieve with bar-shaped beaters that are secured to an elastic mat that is mounted underneath the flexible screen. Both screens are mounted on tensioning rods that reciprocate and thus insure that the lower screen is taut and strikes with its beaters against the lower face of the upper screen in order to knock big particles out of the upper screen. The provision of a second screen underneath the first one is expensive and entails considerable extra manufacturing time.
It is an object of the invention so to improve on the above-described type of sieve that, with simpler construction and assembly, the sieve openings can be reliably kept free of large and sticky particles.
This object is attained in that the beaters are mounted on an elongated longitudinally tensioned actuating element, such as a cable or belt, that extends underneath the screen.
The mounting of the beaters on elongated actuating elements is particularly simple from the manufacturing point of view and leads to particularly good results when cleaning.
Preferably the beaters are spherical. It is also suggested that the actuating element extend transversely, longitudinally, or diagonally of a movement direction of the material being sieved.
It is particularly advantageous when the screen is formed by a replaceable screen assembly that is surrounded by a downwardly projecting annular frame so that a sieve can be formed by several such screen assemblies. In this manner each removable screen assembly has its own system for clearing the screen openings of large and sticky particles.
For particularly simple assembly and installation, ends of the actuating elements are solidly releasably connected or latched to the frame of the screen.
An alternative suggestion is to provide beaters underneath a screen spanned over a full working width of a sieve, ends of the actuating elements carrying two or more beaters being fixed to side walls of the sieve. The ends of the actuating element are solidly releasably connected or latched to side walls of the sieve. It is also advantageous when transverse beams are mounted between the beaters in a lower region of the sieve and support the actuating elements.
Preferably it is suggested that the transverse beams extend transversely or longitudinally of a movement direction of the material being sieved.
It is particularly easy to exchange the beaters when the screen is releasably attached, in particular by hooking, at two opposite edges on side walls of the sieve. In the simplest construction the actuating element extends through the beaters. This also aids in changing the beaters on the actuating elements.
In an alternative attachment system a lower face of the screen is provided with projecting flat iron bars that are embedded in the plastic of the screen and that serve as attachment points for the actuating elements.
Embodiments of the invention are shown in the drawing and more closely described in the following. Therein:
In FIGS. 1 to 3 , a sieve assembly 1 is shown having a generally horizontal rectangular screen 2 in turn held in a frame having four edges with respective frame elements 3 that project downwardly past the screen 2. The screen 2 and frame elements 3 are made of plastic and secured to each other, in particular by gluing, casting, or welding, or the screen 2 and frame elements 3 are unitarily formed of plastic. The plastic is preferably polyurethane. Several such assemblies form the sieve surfaces of a sieve and are individually easily switched.
The frame elements 3 have on their lower faces a downwardly open groove or opening 4 in which ends 6 of an elongated actuating element 5 are fixed. To accomplish this the ends 6 of the elements 5 are enlarged to have the same size and shape as the openings 4 so that they fit and are held complementarily in the openings 4.
The openings 4 in the frame elements 3 can also be made with an inwardly extending projection that the end 6 is looped around so as to lock it in place.
The actuating element 5 is provided with beaters 7 that are preferably made of plastic and that can have different shapes. In all of the embodiments the beaters 7 are spherical balls.
The actuating element with its beaters can extend transversely, longitudinally, or diagonally to the movement direction of the material being sieved.
The embodiment shown in FIG. 4 is a sieve with a screen 8 extending over the entire working width of the sieve and having edges provided with mounting clips 9 that are hooked on mounting rails 10 that are fixed to side walls 11 of the sieve. In this manner the screen 8 is solidly held in the sieve.
Underneath the screen 8 is an actuating element 5 whose ends are releasably mounted on the side walls 11, in particular on mounts 3 of the side walls 11. To this end the mount 13 can have a bore.
In the lower region of the sieve there are transverse beams 12 on which the actuating element 5 lies with at least one beater 7 on the element 5 between each pair of beams 12. FIG. 4 shows these elements when raised.
The beams 12 can extend transversely or longitudinally to the movement direction of the material being sieved, depending how the screen 8 is installed. With a longitudinally tensioned screen 8 the beams extend transverse to the movement direction.
In a further unillustrated embodiment flat iron bars are set on the lower face of the screen in the plastic of the screen so as to project downward and serve as mounting points for the actuating element or elements.
Claims (6)
1. A sieve comprising:
a support; and
a plurality of identical screen assemblies removably mounted in the support and each having
a generally horizontal screen,
a frame surrounding the screen, connected to outer edges of the screen, and projecting downward past the screen;
an elongated and longitudinally tensioned element having opposite ends anchored in the frame at respective opposite edges thereof and extending generally horizontally underneath the screen, and
a beater on the elongated element between the opposite ends thereof and underneath the screen, the beater being engageable with a lower face of the respective screen for freeing particles from openings in the screen.
2. The sieve defined in claim 1 wherein the ends of the element are removably secured in the frame.
3. The sieve defined in claim 1 wherein the beaters are balls.
4. The sieve defined in claim 1 wherein the element is a cable.
5. The sieve defined in claim 1 wherein the element is a belt.
6. The sieve defined in claim 1 wherein the frame and screen are unitarily formed of plastic.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10239667A DE10239667A1 (en) | 2002-08-26 | 2002-08-26 | Screening device with tapping elements |
| DE10239667.1 | 2002-08-26 | ||
| PCT/EP2003/006780 WO2004020113A1 (en) | 2002-08-26 | 2003-06-26 | Sieving device having beating elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| US20050252835A1 US20050252835A1 (en) | 2005-11-17 |
| US7416085B2 true US7416085B2 (en) | 2008-08-26 |
Family
ID=31502077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/525,280 Expired - Fee Related US7416085B2 (en) | 2002-08-26 | 2003-06-26 | Sieving device having beating elements |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7416085B2 (en) |
| EP (1) | EP1531947B1 (en) |
| KR (1) | KR20050034751A (en) |
| AT (1) | ATE387267T1 (en) |
| AU (1) | AU2003245991B9 (en) |
| DE (2) | DE10239667A1 (en) |
| PL (1) | PL205551B1 (en) |
| WO (1) | WO2004020113A1 (en) |
| ZA (1) | ZA200500977B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7861866B1 (en) | 2008-03-07 | 2011-01-04 | Tema Isenmann, Inc. | Screening system with knocking device |
| US11325158B2 (en) | 2019-03-12 | 2022-05-10 | Wlodzimierz Sosnowski | Sieve device for fine cleaning of grainy material |
| US12311408B2 (en) | 2023-03-14 | 2025-05-27 | Johnson Crushers International, Inc. | Flexible screen deck |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11338327B2 (en) | 2007-03-21 | 2022-05-24 | Derrick Corporation | Method and apparatuses for screening |
| DE202010013928U1 (en) | 2010-10-06 | 2011-10-27 | Achim Karcher | Sieve element with a device for protecting the screen openings from clogging |
| CN104550013B (en) * | 2015-01-23 | 2016-05-11 | 中国核动力研究设计院 | Nuclear fuel UO2Microballoon spin vibration sieve separating device |
| CN105855168A (en) * | 2016-04-08 | 2016-08-17 | 李龙胜 | Powder sieving device |
| CN111788014B (en) * | 2017-09-01 | 2023-03-17 | 德里克公司 | Screening anti-blocking device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE296513C (en) | ||||
| US615524A (en) * | 1898-12-06 | Staedter | ||
| US669586A (en) * | 1900-04-04 | 1901-03-12 | Albert Levasseur | Plansifter. |
| US3087617A (en) | 1960-03-02 | 1963-04-30 | Arthur R Forsberg | Screener |
| US4122006A (en) | 1977-09-28 | 1978-10-24 | Black Clawson, Inc. | Screening apparatus |
| US6422394B1 (en) * | 2001-02-26 | 2002-07-23 | William Harold Page | Continuous cleaning system for screening machines |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE599572C (en) * | 1932-08-26 | 1934-07-05 | Bamag Meguin Akt Ges | Cleaning device for sieves swinging up and down |
| US2617533A (en) * | 1948-12-17 | 1952-11-11 | Lehman | Vibrating equipment |
| DE855042C (en) * | 1951-03-17 | 1952-11-10 | Benno Stanger | Grinding bodies for processing liquid to pasty substances in single-roller or multi-roller mills |
| DE8435585U1 (en) * | 1984-12-05 | 1985-03-07 | Hein, Lehmann AG, 4000 Düsseldorf | DEVICE FOR SCREENING SEVERY DIFFERENT GOODS |
| JPH0763680B2 (en) * | 1988-02-12 | 1995-07-12 | ユリ子 甲斐 | Method and apparatus for preventing vibrating screen mesh |
-
2002
- 2002-08-26 DE DE10239667A patent/DE10239667A1/en not_active Withdrawn
-
2003
- 2003-06-26 AU AU2003245991A patent/AU2003245991B9/en not_active Ceased
- 2003-06-26 EP EP03738091A patent/EP1531947B1/en not_active Expired - Lifetime
- 2003-06-26 KR KR1020057003407A patent/KR20050034751A/en not_active Ceased
- 2003-06-26 WO PCT/EP2003/006780 patent/WO2004020113A1/en active IP Right Grant
- 2003-06-26 DE DE50309266T patent/DE50309266D1/en not_active Expired - Lifetime
- 2003-06-26 AT AT03738091T patent/ATE387267T1/en active
- 2003-06-26 US US10/525,280 patent/US7416085B2/en not_active Expired - Fee Related
- 2003-06-26 PL PL373612A patent/PL205551B1/en unknown
-
2005
- 2005-02-02 ZA ZA200500977A patent/ZA200500977B/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE296513C (en) | ||||
| US615524A (en) * | 1898-12-06 | Staedter | ||
| US669586A (en) * | 1900-04-04 | 1901-03-12 | Albert Levasseur | Plansifter. |
| US3087617A (en) | 1960-03-02 | 1963-04-30 | Arthur R Forsberg | Screener |
| US4122006A (en) | 1977-09-28 | 1978-10-24 | Black Clawson, Inc. | Screening apparatus |
| US6422394B1 (en) * | 2001-02-26 | 2002-07-23 | William Harold Page | Continuous cleaning system for screening machines |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7861866B1 (en) | 2008-03-07 | 2011-01-04 | Tema Isenmann, Inc. | Screening system with knocking device |
| US11325158B2 (en) | 2019-03-12 | 2022-05-10 | Wlodzimierz Sosnowski | Sieve device for fine cleaning of grainy material |
| US12311408B2 (en) | 2023-03-14 | 2025-05-27 | Johnson Crushers International, Inc. | Flexible screen deck |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1531947B1 (en) | 2008-02-27 |
| DE50309266D1 (en) | 2008-04-10 |
| DE10239667A1 (en) | 2004-03-11 |
| ATE387267T1 (en) | 2008-03-15 |
| EP1531947A1 (en) | 2005-05-25 |
| PL205551B1 (en) | 2010-04-30 |
| ZA200500977B (en) | 2005-08-29 |
| AU2003245991A2 (en) | 2005-06-30 |
| AU2003245991B2 (en) | 2008-11-27 |
| AU2003245991B8 (en) | 2008-12-18 |
| AU2003245991A1 (en) | 2004-03-19 |
| US20050252835A1 (en) | 2005-11-17 |
| PL373612A1 (en) | 2005-09-05 |
| AU2003245991B9 (en) | 2009-01-08 |
| KR20050034751A (en) | 2005-04-14 |
| WO2004020113A1 (en) | 2004-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: LUDWIG KRIEGER DRAHT- UND KUNSTSTOFFERZEUGNISSE GM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KADEL, ROLF;REEL/FRAME:021210/0642 Effective date: 20050114 |
|
| AS | Assignment |
Owner name: LUDWIG KRIEGER DRAHT-UND KUNSTSTOFFERZEUGNISSE GMB Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE SPELLING OF THE CITY IN THE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 021210 FRAME 0642;ASSIGNOR:KADEL, ROLF;REEL/FRAME:021319/0528 Effective date: 20050114 |
|
| FPAY | Fee payment |
Year of fee payment: 4 |
|
| REMI | Maintenance fee reminder mailed | ||
| LAPS | Lapse for failure to pay maintenance fees | ||
| STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
| FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20160826 |